Sound recording and reproducing machine.



PATENTED MAR.'17, 1903.

G; H. HALL. smmn RECORDING AND REPRODUGING MACHINE.

APPLICATION FILED JAN. 7,1902.

N0 MODEL.

Fig: 2

fi/TNESSESI mus PETERS cu. worouru UNITED STATES 1 ATENT OFFICE.

GEORGE H. HALL, OF PHILADELPHIA, PENNSYLVANIA.

SOUND RECORDING AND REPRODUCING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 722,977, dated March17, 1903.

Application filed January 7,1902. Serial No. 88,735. (No model.)

the improvements and devices which are fully set forth in the followingspecification and are shown in the accompanying drawings.

Owing to the distinctive character of phonographs and graphophones orthose machines in which recording and reproduction are effected by meansof cylindrical sleeves carried on a rotating cylinder as compared withgramophones or those machines in which recording and reproduction areeifect'ed through disks the records of the one class of machines areuseless for the other.

It is one of the objects of my invention to adapt the ordinary mechanismof a phonograph or graphophone to use with gramophone-records, so thatthe machine may be used with either the cylindrical records appropriateto that class of machines or with the disks now adapted for use onlywith gramophones.

It is also an object of my invention to effect this result withoutmaking any change or alteration in the regular mechanism of thephonograph or graphophone, so that the temporary conversion of themachine can be effected Without removing any of its parts or changingtheir adjustment. 7

It is also an object of my invention to enable this conversion to beeffected by simple attachments, which can be easily and quickly appliedor removed without the exercise of more than common intelligence.

In carrying out this part of my invention I employ twoattachments-first, a powertransmitter, which is applied to thephonograph-cylinder or other rotating part of the machine and is adaptedto transmit power to the gramophone-disk, and, second,adisk-support,which is applied to a stationary part of the machine and is adapted tosupport the disk or its table in driving connection with thepower-transmitter. In my preferred construction these attachments arevery simple and may be applied or removed with great facility.

.usual manner.

b is the power-transmitter for transmitting motion from the cylinder atothe gramophonedisk 0. As shown, the power-transmitter consists of a ringd, adapted to fit the rotary cylinder a and having its peripheryprovided I with africtional driving-surface e, which is preferablyformed of a ring ofsoft rubber set in an annular groove in the ring.

fis an uprightadapted to be attached to any stationary part of themachine or its frame. I have shown it provided at the lower part with anotch f, adapted to engage the screw f in the end support a. of thecylindershaft; but any suitable means of attachment may be employed.

9 g are radial arms carried by the upright fand provided with looserollers'g'. These preferably consist of rubber disks looselysupported onthe ends of the arms 9 g by screws h. To permit the radial arms to beadjusted vertically on the upright f, I have shown them carried by. anadjustable collar 9 provided with a set-screw 9 In applying myattachment to a phonograph or graphophone the sound-box or lever islifted and the power transmitter 19 is slipped on the cylinder (1. Theupright f is secured in place, and the disk 0 is placed over theupright, resting on the frictional drivingsurface 6 of thepower-transmitter and the rollers g g. Now when the cylinder at isoperated the disk will be rotated by the powertransmitting connection 5acting frictionally on the under side of the disk. While Ihavetransmitting devices operated by the phonograph or graphophone anddriving the gramophone-disk or its supporting-table by frictionalcontact. The manner of supporting and driving the disk enables it torise and fall in conformity with any irregularities in its plane, sothat the uniformity of the driving action is not afiected byirregularities in the plane of the disk. Any suitable soundbox may beused with the gramophone-disk.

What I claim as new, and desire to secure by Letters Patent, is asfollows:

1. A gramophone attachment for sound recording and reproducing machines,consisting of a power-transmitter adapted to be attached to a drivenpart of the sound recording and reproducing machine, and adisk-supporter adapted for attachment to a stationary part of themachine having means for supporting the disk in driving connection withthe powentransmitter.

2. A gramophone attachment for sound recording and reproducing machines,consisting of a power-transmitter adapted to be attached to a drivenpart of the sound recording and reproducing machine, and a disksupporteradapted for attachment to a stationary part of the machine having meansfor supporting the disk in frictional contact with thepower-transmitter.

3. A gramophone attachment for sound recording and reproducing machines,consisting of a power-transmitter adapted to be attached to a drivenpart of the sound recording and reproducing machine and provided with africtional driving-periphery, and a disk-supporter adapted forattachment to a stationary part of the machine having means forsupporting the disk in frictional driving contact with thepower-transmitter.

4. A gramophoue attachment for phonographs and the like, consisting of apowertransmitting ring adapted to be applied to the rotating cylinder ofthe phonograph and provided with a frictional driving-periphery, and adisk-supporter adapted for attachment to a stationary part of themachine having means to support the disk in frictional driving contactwith the periphery of the powertransmitting ring.

5. A gramophone attachment for phonographs and the like, consisting of apowertransmitter adapted to be attached to a driven part of thephonograph, and a disk-supporter consisting of an upright adapted to beattached to a stationary part of the machine provided with radialsupports adapted to supadapted to support the disk in driving connectionwith the power-transmitter.

7. The power-transmitting attachment for transmitting power from thecylinder of a phonograph and the like,'t0 a gramophonedisk, consistingof a ring d. adapted to be applied to the phonograph-cylinder providedwith a frictional driving-periphery e.

8. The disk-supporting attachment for applying a gramophonedisk to aphonograph and the like, consisting of an uprightfadapt ed forattachment to a stationary part of the machine, provided with radialsupportingarms g.

9. The disksnpporting attachment for applying a gramophone-disk to aphonograph and the like, consisting of an upright'fadapted forattachment to a stationary part of the machine, provided with radialsupportingarms g carrying rollers g.

10. The disk-supportingattachmentfor applying a gramophone-disk to aphonograph andthe like, consisting ofau uprightfadapted for attachmentto a stationary part of the machine, provided with avertically-adjustable collar carrying radial supporting-arms g.

11. In a sound recording and reproducing machine, the combination with arotating driving-ring having a frictional driving-periphery, of adisk-support having radialsupporting-arms adapted to support the disk infrictional driving contact with the periphery of the driving-ring.

12. The herein-described improvement in graphophones comprising amandrel, means for rotatingthe same, a disk plate,'and means carried bysaid mandrel for rotating said disk plate.

13. The herein-described improvement in graphophones comprising amandrel, means for rotating the same, a disk plate, a pivoted base-platesupporting the same, and means carried by said mandrel for rotating saiddisk plate.

14. The herein-described improvement in graphophones comprising amandrel, means for rotating the same, a base-plate having abearing-sleeve, a disk plate having its shaft mounted in said sleeve,and means carried by said mandrel for rotating said disk plate.

15. The herein-described improvement in graphophones comprising amandrel, means for rotating the same, a disk plate, and a removablemember carried by said mandrel arranged to engage and rotate said diskplate.

16. The herein-described improvement in graphophones comprising amandrel, means for rotating the same, a removable ring for said mandrel,and a disk plate arranged to have frictional engagement with said ring.

In testimony of which invention I have hereunto set my hand.

GEORGE E. HALL.

Witnesses:

J. L. APPLETON, H. F. MILLER.

